As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) GROUND SPOILERS DEPLOYED UNCOMMANDED DURING TAXI OUT AFTER CONTROL. CHECK SPOILERS STOWED BY THEMSELVES SEVERAL SECONDS LATER. THIS REPEATED MOMENTS LATER WITH NO CONTROL WHEEL INPUT. AIRCRAFT RETURNED TO GATE.SWAPPED LT AND RT SPOILER ELECTRONIC CONTROL UNITS (SECU). ACTIVATED LT AND RT HYDRAULIC SYSTEMS. INITIATED BITE TEST. BOTH SIDES PASSES BITE TEST. SYSTEM CONSIDERED SERVICEABLE.